Aww. So many great suggestions here. I just want to say I hope some of these things work out and you both start feeling better about his situation.
That could easily be my son but he found one kid he clicks with at school and we are so relieved. He's didn't speak to another student for a month and a half into K until he finally made friends with another boy.
I agree that it only takes one positive relationship in some area of life (doesn't have to be school, although that's ideal) and things will get much better quickly.
Picked DS up from afterschool care today and he told me he has no friends in afterschool. We talked through some strategies. He's 6 and was surprisingly open to suggestions. He ended the conversation with "I'm glad I have XXXX to play with during the day." That one relationship seems to be a very big confidence builder.
